Chipped

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 Peter Fenwick wrote:

IIRC the 1.9 litre engine fitted to the 316 had more like 105 bhp. 

As for remaps on pretty much standard naturally aspirated motors, I wpuldn't waste my money.�I doubt you would get 11bhp�as many of the claims made are questionable.

My suggestion would be to leave it standard for a couple of years, save your money and�then buy a�bigger engined 3 series. A 330 has 231 bhp and will be�massively faster�and much more satisfying than any modifed 316 could ever be unless you stick a turbo on it which will cost big��.

In fact any of the 6 cylinder 3 series will offer a big step up in performance over your 316. You can pick up a decent E46 323 these days for under 3k and with 170 bhp on tap it will fly compared to a 316. 

second that. Most sensible advise.

even if they don't physically have to change the chip in your ECU, it could still be "chipped"

Differences:

"chipping" a car is 9 out of 10 a change of the engine programming with a prewritten chip, meaning that there is NO individual mapping. One size fits all. Expected gains are minimal (unless the original programming was very bad or restrictive for other reasons)

On older cars the chip itself had to be changed because they are ROM chips only and couldn't be erased/overwritten. Newer cars have erasable chips and can just be overwritten with a laptop plugged into the service port

"live" mapping a car means that your car will be strapped on a Dyno and the engine program will be rewritten based on the measurements taken from YOUR engine. This method yields the best results (espcially if other stuff was changed i.e. exhaust/intake/cams)

Edited by UweM3